Flexible and High Thermal Conductivity Composites Based on Graphite Nanoplates Paper Impregnated with Polydimethylsiloxane

被引：4

作者：

Battegazzore, Daniele ^{[1
]}

Fadda, Erica ^{[1
]}

Fina, Alberto ^{[1
]}

机构：

[1] Politecn Torino, Dipartimento Sci Appl & Tecnol, Alessandria Campus,Viale Teresa Michel 5, I-15121 Alessandria, Italy

来源：

JOURNAL OF COMPOSITES SCIENCE | 2021年 / 5卷 / 12期

基金：

欧盟地平线“2020”; 欧洲研究理事会;

关键词：

graphite nanoplates; nanopapers; thermal conductivity; graphite nanoplates polymer composite; GRAPHENE; NANOSHEETS; ROADMAP; FLAKES;

D O I：

10.3390/jcs5120309

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This paper deals with the design, preparation, and characterization of conductive and flexible nanopapers based on graphite nanoplates (GNP) and polydimethylsiloxane (PDMS). Highly porous GNP nanopapers were first prepared by filtration from a GNP suspension in a solvent. Subsequently, PDMS impregnation was carried out to obtain a composite material. By varying the concentration of the polymer solution and the deposition time, PDMS/GNP nanopapers were produced with a wide range of PDMS contents, porosities, and densities. Thermal diffusivity of the composite films (both in-plane and cross-plane) were measured and correlated with the structure of the nanopapers. Selected formulations were investigated in detail for their physical, thermal, and mechanical properties, exhibiting high flexibility and resistance to more than 50 repeated bendings, stiffness of up to 1.3 MPa, and thermal conductivity of up to 25 W/m center dot K. Based on the properties obtained, the materials presented in this paper may find applications in modern lightweight and flexible electronic devices.

引用

页数：11

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